<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <button @click="fn">切换显示隐藏</button>
        <h1 v-show="isShow">黑马程序员</h1>
    </div>

    <script src="./node_modules/vue/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                isShow: true
            },
            methods: {
                fn() {
                    /**
                     * 1. 获取当前isShow的值
                     * 2. 反转isShow的值
                     * 让提供的所有methods中的函数, this都指向当前实例
                     * this: 当前实例对象
                     */
                    this.isShow = !this.isShow
                }
            }
        })
    </script>
</body>

</html>